David L. LePain

David L. LePain

Chief, Energy Resources Section

  • Position:

    Petroleum Geologist, Energy Resources
  • Address:

    3354 College Road Fairbanks, AK 99709-3707
  • Phone:

    (907)451-5085
  • Fax:

    (907)451-5050
  • Email:

    david.lepain@alaska.gov

Projects and/or Research Interests

Dave's geological work focuses on reconstructing depositional systems in the Cook Inlet forearc and Susitna interarc basins, with the ultimate goal of predicting reservoir potential and sand body geometries. Prior to shifting focusto southern Alaska, he worked on various Cretaceous units in outcrop in the foothills belt on the North Slope and spent five years studying the sedimentology and tectonic significance of the Carboniferous Endicott Group in the range-front region of ANWR. Dave took a short break from Alaskan geology in 2012-13 to work as a research geologist in Saudi Aramco's Advanced Research Center in Dhahran, Saudi Arabia.

Selected Publications

  • LePain, D.L., Helmold, K.P., Gillis, R.J., Reger, R.D., and Swenson, R.F., 2017, Field trip guide: Sedimentology, reservoir quality, and tectonic setting of late Miocene-early Pliocene gas-bearing formations, upper Cook Inlet, Alaska.: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 161, 40 p. http://doi.org/10.14509/29713
  • LePain, D.L., and Stanley, R.G., 2017, Reconnaissance sedimentology of selected Tertiary exposures in the upland region bordering the Yukon Flats basin, east-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-6, 14 p. http://doi.org/10.14509/29700
  • LePain, D.L., and Montayne, Simone, 2017, Core fragment descriptions, Exxon core holes, uplands bordering Yukon Flats basin, east-central Alaska: Alaska Division of Geological & Geophysical Surveys Raw Data File 2016-4, 2 p., 1 sheet, scale . http://doi.org/10.14509/29576
  • LePain, D.L., 2016, Stratigraphic and reservoir quality studies of continuous core from the Wainwright #1 coalbed methane test well, Wainwright, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2016-3, 58 p. http://doi.org/10.14509/29652
  • LePain, D.L., Stanley, R.G., and Helmold, K.P., 2016, Nonmarine facies in the Late Triassic(?) to Early Jurassic Horn Mountain Tuff Member of the Talkeetna Formation, Horn Mountain, lower Cook Inlet basin, Alaska, in Herriott, T.M., ed., Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-1-2, p. 9-20. http://doi.org/10.14509/29535
  • LePain, D.L., Stanley, R.G., and Helmold, K.P., 2016, Reconnaissance stratigraphy of the Red Glacier Formation (Middle Jurassic) near Hungryman Creek, Cook Inlet basin, Alaska, in Herriott, T.M., ed., Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-1-3, p. 21-31. http://doi.org/10.14509/29536
  • LePain, D.L., and Stanley, R.G., 2015, Stratigraphic reconnaissance of the Middle Jurassic Red Glacier Formation, Tuxedni Group, at Red Glacier, Cook Inlet, Alaska, in Wartes, M.A., ed., Energy-related studies during the 2014 field season, western Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-5-5, p. 23-28. http://doi.org/10.14509/29460
  • LePain, D.L., Stanley, R.G., Harun, N.T., Helmold, K.P., and Tsigonis, R.M., 2015, Reconnaissance stratigraphic studies in the Susitna basin, Alaska, during the 2014 field season, in Gillis, R.J., ed., Overview of 2014 energy-focused studies in Susitna basin, south-central Alaska, and preliminary results: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-3-2, p. 5-10. http://doi.org/10.14509/29466
  • Helmold, K.P., and LePain, D.L., 2015, Petrology and reservoir quality of sandstones from the Kahiltna Assemblage and Yenlo Hills graywacke: Initial impressions, in Gillis, R.J., ed., Overview of 2014 energy-focused studies in Susitna basin, south-central Alaska, and preliminary results: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-3-3, p. 11-18. http://doi.org/10.14509/29467
  • LePain, D.L., Stanley, R.G., Helmold, K.P., and Shellenbaum, D.P., 2014, Geologic framework and petroleum systems of Cook Inlet basin, south-central Alaska, in Hite, D.M. and Stone, D.M., ed., Oil and gas fields of the Cook Inlet basin, Alaska: AAPG Memoir, 104, p. 37-116.
  • Herriott, T.M., Nye, C.J., Reger, R.D., Wartes, M.A., LePain, D.L., and Gillis, R.J., 2014, Geologic context, age constraints, and sedimentology of a Pleistocene volcaniclastic succession near Mount Spurr volcano, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2014-2, 35 p. http://doi.org/10.14509/27261
  • Helmold, K.P., LePain, D.L., Wilson, M.D., and Peterson, C.S., 2013, Petrology and reservoir potential of Tertiary and Mesozoic sandstones, Cook Inlet, Alaska: A preliminary analysis of outcrop samples collected during 2007-2010 field seasons: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-5, 34 p. http://doi.org/10.14509/25035
  • Gillis, R.J., Stanley, R.G., LePain, D.L., Mauel, D.J., Herriott, T.M., Helmold, K.P., Peterson, C.S., Wartes, M.A., and Shellenbaum, D.P., 2013, Status of a reconnaissance field study of the Susitna basin, 2011: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-4, 8 p. http://doi.org/10.14509/25015
  • Stanley, R.G., Herriott, T.M., LePain, D.L., Helmold, K.P., and Peterson, C.S., 2013, Reconnaissance studies of potential petroleum source rocks in the Middle Jurassic Tuxedni Group near Red Glacier, eastern slope of Iliamna Volcano, in Gillis, R.J., ed., Overview of 2012 field studies: Upper Alaska Peninsula and west side of lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-1B, p. 5-9. http://doi.org/10.14509/24845
  • Swenson, R.F., Wartes, M.A., LePain, D.L., and Clough, J.G., 2012, Fossil fuel and geothermal energy sources for local use in Alaska: Summary of available information: Alaska Division of Geological & Geophysical Surveys Special Report 66, 144 p., 2 sheets, scale 1:3,700,000. http://doi.org/10.14509/24264
  • LePain, D.L., 2012, Summary of fossil fuel and geothermal resource potential in the Lower Yukon-Kuskokwim energy region, in Swenson, R.F., Wartes, M.A., LePain, D.L., and Clough, J.G., Fossil fuel and geothermal energy sources for local use in Alaska: Summary of available information: Alaska Division of Geological & Geophysical Surveys Special Report 66G, p. 63-72. http://doi.org/10.14509/24430
  • LePain, D.L., and Wartes, M.A., 2012, Summary of fossil fuel and geothermal resource potential in the Yukon-Koyukuk/Upper Tanana energy region, in Swenson, R.F., Wartes, M.A., LePain, D.L., and Clough, J.G., Fossil fuel and geothermal energy sources for local use in Alaska: Summary of available information: Alaska Division of Geological & Geophysical Surveys Special Report 66L, p. 123-136. http://doi.org/10.14509/24435
  • LePain, D.L., Lillis, P.G., Helmold, K.P., and Stanley, R.G., 2012, Migrated hydrocarbons in exposure of Maastrichtian nonmarine strata near Saddle Mountain, lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2012-1, 13 p. http://doi.org/10.14509/23943
  • Wartes, M.A., Wallace, W.K., Loveland, A.M., Gillis, R.J., Decker, P.L., Reifenstuhl, R.R., Delaney, P.R., LePain, D.L., and Carson, E.C., 2011, Geologic map of the Kavik River area, northeastern Brooks Range, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2011-3A, 14 p., 1 sheet, scale 1:63,360. http://doi.org/10.14509/22602
  • LePain, D.L., Helmold, K.P., Morris, B., Wilson, G., Gillis, R.J., and Wartes, M.A., 2011, Sedimentology, reservoir quality, and tectonic setting of late Miocene-early Pliocene gas-bearing formations, upper Cook Inlet, Alaska: American Association of Petroleum Geologists Pacific Section, Field Trip Guidebook No. 4.
  • LePain, D.L., ed., 2009, Preliminary results of recent geologic investigations in the Homer-Kachemak Bay area, Cook Inlet basin: Progress during the 2006-2007 field season: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-8, 187 p. http://doi.org/10.14509/20161
  • LePain, D.L., Wartes, M.A., McCarthy, P.J., Stanley, R.G., Silliphant, L.J., Peterson, Shaun, Shellenbaum, D.P., Helmold, K.P., Decker, P.L., Mongrain, Jacob, and Gillis, R.J., 2009, Facies associations, sand body geometry, and depositional systems in Late Oligocene-Pliocene Strata, southern Kenai Peninsula, Cook Inlet, Alaska: Report on progress during the 2006-07 field season, in LePain, D.L., ed., Preliminary results of recent geologic investigations in the Homer-Kachemak Bay area, Cook Inlet basin: Progress during the 2006-2007 field season: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-8A, p. 1-97. http://doi.org/10.14509/20162
  • Finzel, E.S., Ridgway, K.D., and LePain, D.L., 2009, Sedimentology of an Oligocene-Miocene incised paleovalley, Tyonek Formation, Cook Inlet basin, Alaska, in LePain, D.L., ed., Preliminary results of recent geologic investigations in the Homer-Kachemak Bay area, Cook Inlet basin: Progress during the 2006-2007 field season: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-8B, p. 99-107. http://doi.org/10.14509/20163
  • Harris, E.E., Delaney, P.R., Mull, C.G., LePain, D.L., and Burns, P.C., 2009, Geologic map of the Kanayut River area, Chandler Lake Quadrangle, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-7, 1 sheet, scale 1:63,360. http://doi.org/10.14509/19781
  • Finzel, E.S., Gillis, R.J., Ridgway, K.D., and LePain, D.L., 2009, Preliminary evaluation of basin margin exhumation and provenance of Cenozoic strata, Chuitna and Beluga rivers area, Cook Inlet forearc basin, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-4, 16 p. http://doi.org/10.14509/19641
  • Gillis, R.J., LePain, D.L., Ridgway, K.D., and Finzel, E.S., 2009, A reconnaissance view of an unnamed fault near Capps Glacier, northwestern Cook Inlet basin, and its potential as a regional-scale, basin-controlling structure: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-3, 9 p. http://doi.org/10.14509/19503
  • Hartz, J.D., Kremer, M.C., Krouskop, D.L., Silliphant, L.J., Houle, J.A., Anderson, P.C., and LePain, D.L., 2009, Preliminary engineering and geological evaluation of remaining Cook Inlet gas reserves: Alaska Division of Oil & Gas, Report, 47 p.
  • Aswasereelert, W., Simo, J.A., and LePain, D.L., 2008, Deposition of the Cambrian Eau Claire Formation, Wisconsin: Hydrostratigraphic implications of fine-grained cratonic sandstones: Geoscience Wisconsin, GS 19-a01, 22 p.
  • LePain, D.L., Bradbury, K.R., and Cobb, M.K., 2008, Hydrostratigraphy of west-central Wisconsin: A new approach to groundwater management: Wisconsin Geological & Natural History Survey, Open-File Report 2005-04.
  • LePain, D.L., Decker, P.L., and Wartes, M.A., 2008, Measured sections and preliminary interpretations of the Nanushuk Formation exposed along the Colville River near the confluences with the Awuna and Killik rivers, in Wartes, M.A., and Decker, P.L., eds., Preliminary results of recent geologic field investigations in the Brooks Range Foothills and North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2008-1D, p. 41-45, 4 sheets. http://doi.org/10.14509/16088
  • LePain, D.L., Kirkham, Russell, Gillis, R.J., and Mongrain, Jacob, 2008, Turonian-Campanian strata east of the Trans-Alaska Pipeline corridor, North Slope foothills, Alaska: Progress during the 2001-02 and 2007 field seasons, in Wartes, M.A., and Decker, P.L., eds., Preliminary results of recent geologic field investigations in the Brooks Range Foothills and North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2008-1G, p. 85-134. http://doi.org/10.14509/16090
  • Evans, T.J., Cordue, W.S., and LePain, D.L., 2007, Preliminary geology of the buried bedrock surface, Pierce County, Wisconsin: Wisconsin Geological & Natural History Survey, Open-File Report 2007-08, 1 sheet, scale 1:100,000.
  • LePain, D.L., 2006, Preliminary geologic map of the buried bedrock surface of St. Croix County, Wisconsin: Wisconsin Geological & Natural History Survey, Open-File Report 2006-04, 1 sheet, scale 1:100,000.
  • LePain, D.L., Blodgett, R.B., and Clough, J.G., 2003, Sedimentology and hydrocarbon source rock potential of Miocene-Oligocene strata, McGrath Quadrangle: An outcrop analog for the Holitna basin: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2002-5, 75 p. http://doi.org/10.14509/2870
  • Peapples, P.R., Delaney, A.J., and LePain, D.L., 2002, 400 MHz ground-penetrating radar, Itkillik River, North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 126, 1 sheet, scale 1:100. http://doi.org/10.14509/2865
  • LePain, D.L., and Kirkham, Russell, 2001, Potential reservoir facies in the Nanushuk Formation (Albian-Cenomanian), central North Slope, Alaska: Examples from outcrop and core, in D. W. Houseknecht, ed., NPRA core workshop: Petroleum plays and systems in the National Petroleum Reserve in Alaska: SEPM Core Workshop 21, p. 19-36.
  • Reifenstuhl, R.R., Mull, C.G., Harris, E.E., LePain, D.L., and Wallace, W.K., 2000, Interpretive bedrock geologic map of the Sagavanirktok B-1 Quadrangle, eastern North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2000-1B, 11 p., 1 sheet, scale 1:63,360. http://doi.org/10.14509/2676
  • Szumigala, D.J., Pinney, D.S., LePain, D.L., Liss, S.A., Burns, L.E., Clautice, K.H., Mayer, J.L., and McCarthy, A.M., 2000, Interpretive bedrock-geologic map of the Petersville (Yentna) mining district, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2000-3, 1 sheet, scale 1:63,360. http://doi.org/10.14509/2882
  • LePain, D.L., Adams, K.E., and Mull, C.G., 2000, Measured section and interpretation of the Tingmerkpuk sandstone (Neocomian), northwestern De Long Mountains, western Arctic Slope, Alaska, in Pinney, D.S., and Davis, P.K., eds., Short Notes on Alaska Geology 1999: Alaska Division of Geological & Geophysical Surveys Professional Report 119D, p. 45-62. http://doi.org/10.14509/2686
  • Reifenstuhl, R.R., Mull, C.G., Harris, E.E., LePain, D.L., Pinney, D.S., and Wallace, W.K., 2000, Geologic map of the Sagavanirktok B-1 Quadrangle, eastern North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2000-1A, 15 p., 1 sheet, scale 1:63,360. http://doi.org/10.14509/2675
  • LePain, D.L., Blodgett, R.B., Clough, J.G., Ryherd, T.J., and Smith, T.N., 2000, Generalized stratigraphy and petroleum potential of the Holitna region, southwest Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2000-1, 34 p., 1 sheet, scale 1:250,000. http://doi.org/10.14509/2665
  • Blodgett, R.B., LePain, D.L., and Clough, J.G., 1999, Bibliography on the geology of the Holitna lowland and surrounding area: Alaska Division of Geological & Geophysical Surveys Raw Data File 1999-3, 26 p. http://doi.org/10.14509/2339
  • DGGS Staff, LePain, D.L., and Mull, C.G., 1999, Alaska GeoSurvey News - Upcoming strategic studies and mapping in the Brooks Range Foothills of the central North Slope: Alaska Division of Geological & Geophysical Surveys Newsletter 1999-2, 6 p. http://doi.org/10.14509/14581
  • LePain, D.L., and Adams, K.E., 1999, Stratigraphy and depositional setting of the Tingmerkpuk sandstone (Neocomian), northwestern De Long Mountains, western Arctic Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 1999-2, 5 p., 1 sheet, scale 1:127. http://doi.org/10.14509/2244
  • Pinney, D.S., Szumigala, D.J., Mayer, J.L., Liss, S.A., Clautice, K.H., McCarthy, A.M., LePain, D.L., Combellick, R.A., and Strandberg, N.M., 1998, Geochemical trace-element data from rocks collected in the Petersville (Yentna) mining district, 1998: Alaska Division of Geological & Geophysical Surveys Public Data File 98-32A, 19 p., 1 sheet, scale 1:63,360. http://doi.org/10.14509/1857
  • LePain, D.L., 1998, Paleotopographic control on deposition of the Lower Kayak Shale, northern Franklin Mountains, Brooks Range, Alaska, in Clough, J.G., and Larson, Frank, eds., Short notes on Alaska geology 1997: Alaska Division of Geological & Geophysical Surveys Professional Report 118F, p. 71-85. http://doi.org/10.14509/2333
  • LePain, D.L., Crowder, R.K., and Wallace, W.K., 1994, Early Carboniferous transgression on a passive continental margin: Deposition of the Kekiktuk Conglomerate, northeastern Brooks Range, Alaska: AAPG Bulletin, v. 78, no. 5, p. 679-699.
  • LePain, D.L., and Crowder, R.K., 1991, Measured sections and environmental interpretations of the Endicott Group (Mississippian), northeastern Arctic National Wildlife Refuge, Alaska: Alaska Division of Geological & Geophysical Surveys Public Data File 91-11, 72 p. http://doi.org/10.14509/1478
  • LePain, D.L., and Crowder, R.K., 1990, Detailed measured sections from the Endicott Group (Mississippian) in the Shublik Mountains, Fourth Range, and Franklin Mountains, northeastern Brooks Range, Alaska: Alaska Division of Geological & Geophysical Surveys Public Data File 90-2C, 73 p. http://doi.org/10.14509/1436
  • LePain, D.L., and Crowder, R.K., 1989, Detailed stratigraphic sections of the Mississippian Endicott Group in the central Franklin and eastern Romanzof Mountains, Arctic National Wildlife Refuge, northeastern Alaska: Alaska Division of Geological & Geophysical Surveys Public Data File 89-1E, 22 p. http://doi.org/10.14509/1395

Selected Presentations

  • LePain, D.L., Stanley, R.G., Helmold, K.P., and Shellenbaum, D.P., 2014, Geologic framework of Cook Inlet basin, south-central Alaska: The depositional systems perspective (Keynote): Alaska Geological Society, Annual Technical Conference Abstracts, p. 9.
  • LePain, D.L., Stanley, R.G., Helmold, K.P., Peterson, C.S., Gillis, R.J., Wartes, M.A., and Herriott, T.M., 2011, Deposition of Paleocene(?)-Eocene West Foreland Formation, northwest margin Cook Inlet basin: Record of coeval faulting and explosive volcanism [abs.]: American Association of Petroleum Geologists Pacific Section Annual Meeting, Anchorage, AK, 6-14 May, p. 70.
  • LePain, D.L., Stanley, R.G., Gillis, R.J., Helmold, K.P., Peterson, C.S., and Wartes, M.A., 2011, Deposition of Middle Jurassic Tuxedni Group, lower Cook Inlet, Alaska: Initial exhumation of an Early Jurassic island arc and incipient motion of the Bruin Bay fault zone [abs.]: American Association of Petroleum Geologists Pacific Section Annual Meeting, Anchorage, AK, 6-14 May, p. 71.
  • LePain, D.L., Wartes, M.A., McCarthy, P.J., Stanley, R.G., Silliphant, L.J., Helmold, K.P., Shellenbaum, D.P., Gillis, R.J., Peterson, Shaun, Mongrain, Jacob, and Decker, P.L., 2008, Tertiary depositional systems in upper Cook Inlet, Alaska: Influence of fluvial style on reservoir geometries and stratigraphic trap potential (poster): AAPG 2008 Annual Convention and Exhibition, Abstract Volume 17, p. 119: Alaska Division of Geological & Geophysical Surveys , 1 sheet. http://doi.org/10.14509/21829
  • LePain, D.L., Decker, P.L., Wartes, M.A., Gillis, R.J., Mongrain, J.R., Kirkham, R., and Shellenbaum, D.P., 2008, Sedimentology and stratigraphy of Upper Cretaceous strata in the Sagavanirktok River area, east-central North Slope, Alaska [abs.]: American Association of Petroleum Geologists, Annual Convention, San Antonio, TX.
  • LePain, D.L., McCarthy, P.J., and Kirkham, R., 2006, Facies stacking patterns in storm-influenced delta front and shoreface successions, Nanushuk Formation, central North Slope, Alaska [abs.]: Geological Society of America, Abstracts with Programs v. 38, no. 5, p. 89. http://gsa.confex.com/gsa/2006CD/finalprogram/abstract_104563.htm
  • LePain, D.L., Schoephoester, P.R., Thomas, C.L., and Czechanski, M.L., 2005, Bedrock geologic mapping and hydrostratigraphy of Lower Paleozoic strata in Pierce and St. Croix Counties, west-central Wisconsin [abs.]: Geological Society of America, Abstracts with Programs v. 37, no. 5, p. 94. https://gsa.confex.com/gsa/2005NC/finalprogram/abstract_87256.htm
  • LePain, D.L., McCarthy, P.J., and Kirkham, R., 2004, Outcrop expression of sequence boundaries in the Albian-Cenomanian Nanushuk Formation, central North Slope, Alaska: American Association of Petroleum Geologists, 2004 Annual Convention Abstract Volume, p. A82.
  • LePain, D.L., and Kirkham, R., 2002, Stratigraphy of a Cenomanian estuarine complex in the Upper Nanushuk Formation, Ninuluk Bluff, Alaska: American Association of Petroleum Geologists Pacific Section Annual Meeting, Program and Abstracts, p. 87.
  • LePain, D.L., Kirkham, R., and McCarthy, P.J., 2002, Shoreline to basin transition(?) in Albian-Cenomanian strata east of the Sagavanirktok River, Brooks Range foothills, Alaska [abs.]: AAPG Pacific Section/SPE Regional Conference, Program and Abstracts, p. 87.